
T - the data type of each rowpublic static class CellTable extends Object
Column class defines the
Cell used to render a column. Implement
Column.getValue(Object) to retrieve the field value from the row
object that will be rendered in the Cell.
Header can be placed at the top
(header) or bottom (footer) of the CellTable. You can specify a
header as text using #addColumn(Column, String), or you can create a
custom Header that can change with the value of the cells, such as a
column total. The Header will be rendered every time the row data
changes or the table is redrawn. If you pass the same header instance (==)
into adjacent columns, the header will span the columns.
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